Making a difference in our environment is as simple as driving a more fuel-efficient vehicle. That's why Chevy currently offers eight models with an EPA estimated 30 MPG highway or better.(1) Aveo Sedan, Aveo5, Cobalt, Cobalt XFE, Malibu Hybrid, and select models of Malibu, HHR, and HHR Panel all fall into the 30 MPG or better club. But it's not just about cars. Chevy Silverado offers the best V8 fuel economy of any full-size pickup,(2) and the full-size Tahoe SUV delivers best-in-class fuel economy.(3) New technology like Chevy's Active Fuel Management has played a role in achieving greater fuel economy. Active Fuel Management deactivates half the engine cylinders when they are not needed and seamlessly reactivates them when you need the extra power. And there's more! Every 2008 Chevy car, half-ton truck and SUV is equipped with a Tire Pressure Monitor that automatically alerts you when your tire pressure is low. Properly inflated tires can improve gas mileage by up to 3%.(4) Seems small, but if everyone in the U.S. had properly inflated tires, we could save millions of gallons of gas each year.